Can we safely use a higher *anode* voltage on the LED than the 3.6Vmax listed for LEDXx? Does pin have protection that would allow this? My concern is not when the LED is being driven (LED Vf would be in play). Rather, when the LED is not being driven. I am concerned that the LED cathode voltage will float upward (albeit, very, very slowly), eventually clipping above 3.6V and putting stress on the pin. Do you have protection diodes in place in the pin?